public override DataTemplate SelectTemplate(object item, DependencyObject container)
{
if (item is DrillDownMenuItem)
{
DrillDownMenuItem menuItem = item as DrillDownMenuItem;
if (menuItem.IsFolder)
{
return(FolderTemplate);
}
else
{
if (menuItem.IsBackItem)
{
return(BackButtonTemplate);
}
else
{
return(MenuItemTemplate);
}
}
}
else
{
return(MenuItemTemplate); // base.SelectTemplate(item, container);
}
}
public virtual object Clone()
{
DrillDownMenuItem clone = new DrillDownMenuItem
{
SearchText = this.SearchText,
Caption = this.Caption,
Id = this.Id,
IsBackItem = this.IsBackItem,
IsEnabled = this.IsEnabled,
IsFolder = this.IsFolder,
IsReadOnly = this.IsReadOnly
};
ObservableCollection <DrillDownMenuItem> children = new ObservableCollection <DrillDownMenuItem>();
foreach (DrillDownMenuItem child in this.Children)
{
DrillDownMenuItem childClone = child.Clone() as DrillDownMenuItem;
childClone.Parent = clone;
children.Add(childClone);
}
clone.Children = children;
return(clone);
}
private void MenuItemSelectedEventHandler(DrillDownMenuItem selectedMenuItem)
{
if (selectedMenuItem.IsFolder)
{
this.Header = selectedMenuItem.Caption;
CurrentFolder = selectedMenuItem;
}
}
private void SearchRecursive(DrillDownMenuItem item, string searchText, IList <DrillDownMenuItem> resultItems, bool recursion = false)
{
if (!recursion)
{
searchText = searchText.ToLower();
searchText = searchText.Trim();
resultListExactMatchIndex = 0;
resultListStartWithMatchIndex = 0;
resultListInMatchIndex = 0;
}
if (item != null)
{
if (!item.IsFolder && !item.IsBackItem)
{
string itemText = item.SearchText.ToLower();
int insertIndex = -1;
if (itemText == searchText)
{
insertIndex = resultListExactMatchIndex;
resultListExactMatchIndex++;
resultListStartWithMatchIndex++;
resultListInMatchIndex++;
}
else if (itemText.StartsWith(searchText))
{
insertIndex = resultListStartWithMatchIndex;
resultListStartWithMatchIndex++;
resultListInMatchIndex++;
}
else if (itemText.Contains(searchText))
{
insertIndex = resultListInMatchIndex;
resultListInMatchIndex++;
}
if (insertIndex > -1)
{
if (resultItems.Count(listItem => listItem.Id == item.Id) == 0)
{
resultItems.Insert(insertIndex, item);
}
}
}
foreach (DrillDownMenuItem child in item.Children)
{
SearchRecursive(child, searchText, resultItems, true);
}
}
}
private void AdjustCaptionBinding()
{
if ((isBackItem) && (parent != null))
{
DrillDownMenuItem backParent = parent.Parent != null ? parent.Parent : parent;
BindingOperations.SetBinding(this, DrillDownMenuItem.CaptionProperty, new Binding()
{
Source = backParent,
Path = new PropertyPath("Caption")
});
}
}
private void TryNavigateDown(object selectedItem)
{
MenuItemSelectedEventArgs args;
bool raiseEvent = true;
// If we have wrappped the entries
DrillDownMenuItem selectedMenuItem = selectedItem as DrillDownMenuItem;
if (selectedMenuItem != null)
{
if (selectedMenuItem.IsEnabled)
{
if (selectedMenuItem.IsFolder)
{
_searchManager.Reset();
this.Header = selectedMenuItem.Caption;
(_presenter.Transition as SlideTransition).Mode = TransitionMode.In;
CurrentFolder = selectedMenuItem;
}
}
if (selectedMenuItem.IsBackItem)
{
NavigateBack();
raiseEvent = false;
}
}
if (raiseEvent)
{
// Raise external event
args = new MenuItemSelectedEventArgs(MenuItemSelectedEvent, selectedItem);
RaiseEvent(args);
_currentListBox.SelectedItem = null;
if ((_currentListBox.Items.Count > 0) && (selectedItem != _currentListBox.Items[0]))
{
_currentListBox.SelectedItem = _currentListBox.Items[0];
}
}
/*
* if (registerKeyTips)
* {
* RegisterKeyTips(this);
* }
*/
}
private void FolderSearchRecursion(DrillDownMenuItem currentMenuItem, List <DrillDownMenuItem> folderList)
{
if (currentMenuItem.IsFolder && !currentMenuItem.IsBackItem)
{
folderList.Add(currentMenuItem);
List <DrillDownMenuItem> childFolders = currentMenuItem.Children.Where(m => m.IsFolder && !m.IsBackItem).ToList();
if (childFolders.Count > 0)
{
foreach (DrillDownMenuItem childFolder in childFolders)
{
FolderSearchRecursion(childFolder, folderList);
}
}
}
}
private void NavigateBack()
{
if ((CurrentFolder != null) && (CurrentFolder.Parent == null))
{
return;
}
DrillDownMenuItem selectedMenuItem = CurrentFolder.Parent;
(_presenter.Transition as SlideTransition).Mode = TransitionMode.Out;
CurrentFolder = selectedMenuItem;
if ((_currentListBox.Items.Count > 0) && (_currentListBox.SelectedItem != _currentListBox.Items[0]))
{
_currentListBox.SelectedItem = _currentListBox.Items[0];
}
}
void SearchServiceQueryCompleted(object result, Exception e)
{
if (result != null)
{
DrillDownMenuItem root = new DrillDownMenuItem();
root.Caption = SearchResultText;
root.IsFolder = true;
DrillDownMenuItem temp = root;
IList <DrillDownMenuItem> resultItems = result as IList <DrillDownMenuItem>;
for (int i = 0; i < resultItems.Count; i++)
{
if ((i % 20 == 0) && (i > 0))
{
DrillDownMenuItem sub = new DrillDownMenuItem();
sub.IsFolder = true;
sub.Caption = MoreResultsText;
sub.Parent = temp;
temp.Children.Add(sub);
temp = sub;
}
temp.Children.Add(resultItems[i]);
}
this.CurrentFolder = root;
if (_currentListBox.Items.Count > 0)
{
_currentListBox.SelectedItem = _currentListBox.Items[0];
}
}
ongoingSearches--;
if (ongoingSearches <= 0)
{
searchFinishedEvent.Set();
}
}
public DrillDownMenuItem GetDropTarget(DragEventArgs e)
{
DrillDownMenuItem dropTarget = null;
for (int i = 0; i < _currentListBox.Items.Count; i++)
{
ListBoxItem lbi = _currentListBox.ItemContainerGenerator.ContainerFromIndex(i) as ListBoxItem;
if (lbi == null)
{
continue;
}
if (IsMouseOverTarget(lbi, e.GetPosition((IInputElement)lbi)))
{
dropTarget = (DrillDownMenuItem)_currentListBox.Items[i];
break;
}
}
return(dropTarget);
}
